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* libguile/numbers.c (scm_finite_p): Add new predicate `finite?' from R6RS to guile core, which returns #t if and only if its argument is neither infinite nor a NaN. Note that this is not the same as (not (inf? x)) or (not (infinite? x)), since NaNs are neither finite nor infinite. * test-suite/tests/numbers.test: Add test cases for `finite?'. * module/rnrs/base.scm: Import `inf?' as `infinite?' instead of reimplementing it. Previously, the R6RS implementation of `infinite?' did not detect non-real complex infinities, nor did it throw exceptions for non-numbers. (Note that NaNs _are_ considered numbers by scheme, despite their name). Import `finite?' instead of reimplementing it. Previously, the R6RS implementation of `finite?' returned #t for both NaNs and non-real complex infinities, in violation of R6RS. * NEWS: Add NEWS entries, and reorganize existing numerics-related entries together under one subheading. * doc/ref/api-data.texi (Real and Rational Numbers): Add docs for `finite?' and scm_finite_p. |
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| maint | ||
| r5rs | ||
| ref | ||
| sources | ||
| .gitignore | ||
| BUGS | ||
| ChangeLog-2008 | ||
| ChangeLog-guile-doc | ||
| gendocs_template | ||
| goops.mail | ||
| groupings.alist | ||
| guile-api.alist | ||
| guile.1 | ||
| hacks.el | ||
| Makefile.am | ||
| NEWS | ||
| oldfmt.c | ||
| README | ||
| recipe-guidelines.txt | ||
| texinfo.tex | ||
| THANKS | ||
| use-cases.fig | ||
| use-cases.txt | ||
This directory contains documentation on the Guile core. -*-text-*- The documentation consists of the following manuals. - The Guile Tutorial (guile-tut.texi) contains a tutorial introduction to using Guile. - The Guile Reference Manual (guile.texi) contains (or is intended to contain) reference documentation on all aspects of Guile. - The Revised^5 Report on the Algorithmic Language Scheme (r5rs.texi). Please be aware that this is all very much work in progress (apart from the Revised^5 Report). Bug reports and contributions are welcome! The file `oldfmt.c' contains a function which can be used by application writers to support both old-style and new-style error format strings. The `sources' directory includes some stuff relevant to the Guile reference manual, and which may eventually be folded in to it. It's not immediately relevant, however, which is why it's not in this directory. The Revised^4 Report (r4rs.texi) is no longer in this distribution, as it is completely superseded by the Revised^5 Report. If you need to consult R4RS, it is still widely available, for example at http://www-swiss.ai.mit.edu/projects/info/SchemeDocs/r4rs/.